Pin wheel



Nov. 3, 1925. 1,559,696

J. HEBEREING PIN WHEEL Filed May 31, 1924 v I mluntov. Ooh chew-mg I anew;

Patented Nov. 3, 1925.

some HEBERLING, or no CHESTER, NEW YQBK{{ Ass-IeiwoR "r0 Luann-seamen ayne-anon filed May 31, 19241 S erial 1{o.;'716,93 3,; my

To ZZZZ "whom. it may comma State of New York, havelinventedcertain new" andfuseful Improvements in Pin lVheels, of whichthe following is a specification.

The present invention relates to wind wheels and an object thereof is to provide a wind wheel construction in which the re sisting surfaces are reduced to a minimum. Another object of the invention is to provide a pin .wheel having more than two blades and so constructed that two propellers may be arranged to turn about a single axis in close proximity without any material air interference between them.

In the drawings Figure 1 is a front eleva-x tionof my improved pinwheel, and

Figure 2 is a plan view of the blank from which the windmill is-inade.

In the drawings like numerals indicate like parts. numeral 1 indicates-the blank from which the rotor of my improved windmill is made. This blank in this instance is made from a single piece of triangular stock, and is cut so as to form three blade forming elements which are indicated by the numerals 2, 3 and 4 all of which blades are in this instance integrally connected by the central portion 5 by reduced necks 5. edges 6, 7 and 8 of the vanes preferably coincide substantially with the edges of an equilateral triangle of which the point or turning center of the pin wheel 9 is the center. The long inner edges 10, 11 and 12 of each blade are shown substantially radial to the center but while they may they preferably do not extend to the angle of the triangle that circumscribes the blank, but do preferably extend to a point to the right or left of the angle of the triangle. The end of the vane is thusmade wide and its rotating effect is thereby greatly increased. It is not necessary that the lines 10, 11 and 12 be radial to the center of rotation. The short inner edges 14, 15 and 16 are preferably tangential to a small circle. Any of these lines may be curved instead of strai ht. In all embodiments the blade forming elements are in the form of two .oppositely extending arms, so arranged that the distance '21 from the extreme outeriend In the drawings reference The outer.

I H of ,0 ne arlntothe turning center 9 is' l'ss ."Beitkno'w'n that I, Jo'HNI-IEBER I ve, a. citize'nof' the United States,residiiig at. semester, "in" the county of Monroe and;

than vth'e'ijfdistan'ce 22 between such center,

an ins-extreme .outerjendjofthe? Q arm" Furthermore; thejb'lade roaming" n;

1s a en ate byi zec sse he m nth's" 2371a ij thq ietxiti yi o. b id r the straight line 'eeurawnrrom the center "9 to that outermost portion of a blade forming element Which is to form the tip of the blade, said recess being of such shape that when the shorter arms are curved over the longer arms, the resisting surface 25 formed by such. shorter arms will extend less than one half of the lengths of the blades.

The short ends of each vane are perforated as indicated at 18, 19 and 20, and these, ends are bent over and gathered together so that the openings therein will be cOn- I centric with or in line'with the center 9 of the rotor. A pin or shaft 26 is passed through the center of the rotor on which the left the mill will turn in a direction counterclockwise. If the blank is turned upside down and the short arms are turned to the right the mill will turn clockwise. The net result of forming a rotor in this way is that one end of each vane is long and wide and is well adapted to catch the wind and the other end is short and narrow and is adapted to bend readily to the desired position so as to present a small front-to the wind with the least resistance and expose practically all of the large vane to the wind and hold it in flared position so as best to secure reaction to the wind.

The lines may be variedwithin wide limits,

but I have *shown the blank cut to secure the best results in this particular. I

In Figure 1 I have shown a dotted line across the inner end of one of 'thevanes' where it joins the center. This is to bring out what may be considered the shape of 'the the same shaft to turn in the samedirection: 10

or in opposite directions, are

ordinarily mounted on a stick, that is the shaft on which" the mill turns is fastened toastick.

' The rotor formed in this Way is easily and cheaply-formed and gives theblades avery advantageous curve and exposure to the breeze, and I have found by experiment that it turns very easily and freely in aver-ylight breeze, more so it is believed than any of the Windmills hereto for e devi sed.

Lelaim: A windwheel blank having a central por tion and three symmetrically arranged blade forming: elements,,ieach connected to the centr al portion by "a rednce d neck, said blade m g elemen .li vinglt 'p es y e nd neia hsr th d tanc e we h e treme end of one arm and the center of the central portion being greater than; the distance between the extreme end of the other arm and the center of the central portion and the elementsxbeing separatedby recesses Whosemonths lie entirely to one side of straight lines drawn from the center of the central portion to those outermost portions of the blade forming elements which are to form the tips of-the blades, said recesses being of such shape that When the shorter arms are curved over the longer arms, the resisting surfaces formed-bysuch shorter arms will extend less than one half of the lengths of the blades. I g In testimony whereof I affix my signature.

JOHN HEBERLING. 

